Oil-baffle plate



Aug. 18,1925. 1,550,511

C. W. CRAM 01L BAFFLE PLATE Filed Nov. 19, 1924 Grain INVENIOR ATT ARNEY WITNESS:

. Patented Aug. 18, 1925.

UNITED STATES CHARLES W. CRAM, OF CHIOKASAW, ALABAMA. I

OIL-RAFFLE PLATE.

Application filed. November 19, 1924. Serial No. 750,873.

T all whom it may concern:

Be it known that I, CHARLES IV. CRAM, a citizen of the United States, residing at Chickasaw, in the county of Mobile and State of Alabama, have invented new and useful Improvements in. Oil-Baffle Plates, of which the following is a specification.

My invention is an oil baflie plate for internal combustion engine pistons and its principal object is to provide an attachment for pistons whichwill prevent pumping of oil into the combustion chamber aswell as the upper end of the piston and thereby eliminate all of the disadvantages incident to such pumping of the oil.

My invention also contemplates an attachment which can be readily associated with any internal combustion engine piston which will eliminate wasting of the oil, fouling of the spark plugs and all other disadvantages incident to oil entering the grooves of the piston and cylinders.

With the preceding and other objects and advantages in mind, the invention consists in the novel combination of elements, construction and arrangement of parts and operations to be hereinafter specifically referred to, claimed, and illustrated in the accompanying drawings, wherein:

Figure 1 is a vertical sectional view of a piston constructedin accordance with my invention.

Figure 2 is a similar view taken at right angles to Figure 1.

Figure 3 is a transverse sectional view of the piston.

Figure 4: is a sectional view of the attachment, and

Figure 5 is a detail view of parts of the invention.

The invention as reduced to practice, comprises a circular plate 5 having a depending annular flange 6 which with the plate 5 is positioned in the lower end of the piston designated A, as shown.

The circular plate 5 is provided with parallel flanges 8 which are formedby striking them out from the plate 5 and leaving a longitudinal slot or opening 9 through which the piston rod 13 extends and permits free play of the latter.

In order to hold the device in place there is provided a split ring 10 which is received within the annular flange 6 and terminates in a pair of spaced inwardly directed parallel eyes 11 through which an adjusting bolt 12 extends. This adjusting bolt 12 is threaded throughout its entire length to re ceive pairs of jamb nuts 13 disposed upon opposite sides of the eyes and retain the same in adjusted position. It will be observed that upon adjusting the nuts 11 the ring may be expanded sufficiently to hold the flange 6 against the walls of the engine piston. It will be observed that the device prevents the passage of lubricant through the piston and hence through the wrist pin bearing and is thereby prevented from entering the engine cylinder above the piston and consequently fouling the. spark plug.

lVhile I have shown and described the preferred embodiment of the invention, I desire to have it understood that such changes may be made in the form, construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claims.

lVhat is claimed is 1. The combination with an internal compiston rod passes, and flanges depending from the plate and disposed upon opposite sides of the opening and piston rod.

2 An attachment for an internal combustion engine piston comprising a circular plate adapted to be positioned in the piston, an annular flange thereon in contact with the piston walls, a split ring received in the flange and adapted to resiliently hold the same against the walls of the piston, laterally disposed parallel ears on the ends of the split band and adjusting means engaging the eyes. 7

V 3. An attachment for an internal combustion engine piston comprising a circular CHARLES w. ORAM.

plate to be positioned within the lower end of A 

